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rAKA/src/common/aka_enum_macros.hh
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aka_enum_macros.hh
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/**
* @file aka_enum_macros.hh
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Mon Nov 05 2018
* @date last modification: Tue Sep 29 2020
*
* @brief Macros to help declare enums
*
*
* @section LICENSE
*
* Copyright (©) 2018-2021 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
* A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include <algorithm>
#include <cstdlib> // std::size_t
#include <string>
/* -------------------------------------------------------------------------- */
#ifndef AKANTU_AKA_ENUM_MACROS_HH_
#define AKANTU_AKA_ENUM_MACROS_HH_
#define AKANTU_PP_ENUM(s, data, i, elem) \
BOOST_PP_TUPLE_REM() \
elem BOOST_PP_COMMA_IF(BOOST_PP_NOT_EQUAL(i, BOOST_PP_DEC(data)))
#if (defined(__GNUC__) || defined(__GNUG__))
#define AKA_GCC_VERSION \
(__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
#if AKA_GCC_VERSION < 60000
#define AKANTU_ENUM_HASH(type_name) \
namespace std { \
template <> struct hash<::akantu::type_name> { \
using argument_type = ::akantu::type_name; \
auto operator()(const argument_type &e) const noexcept { \
auto ue = underlying_type_t<argument_type>(e); \
return uh(ue); \
} \
\
private: \
const hash<underlying_type_t<argument_type>> uh{}; \
}; \
}
#else
#define AKANTU_ENUM_HASH(type_name)
#endif // AKA_GCC_VERSION
#endif // GNU
#define AKANTU_PP_CAT(s, data, elem) BOOST_PP_CAT(data, elem)
#define AKANTU_PP_TYPE_TO_STR(s, data, elem) \
({BOOST_PP_CAT(data, elem), BOOST_PP_STRINGIZE(elem)})
#define AKANTU_PP_STR_TO_TYPE(s, data, elem) \
({BOOST_PP_STRINGIZE(elem), BOOST_PP_CAT(data, elem)})
#define AKANTU_CLASS_ENUM_DECLARE(type_name, list) \
enum class type_name { \
BOOST_PP_SEQ_ENUM(BOOST_PP_SEQ_TRANSFORM(AKANTU_PP_CAT, _, list)) \
};
#define AKANTU_ENUM_OUTPUT_STREAM_(type_name, list, prefix) \
} \
AKANTU_ENUM_HASH(type_name) \
namespace std { \
inline auto to_string(const ::akantu::type_name &type) -> string { \
using namespace akantu; \
static unordered_map<::akantu::type_name, string> convert{ \
BOOST_PP_SEQ_FOR_EACH_I( \
AKANTU_PP_ENUM, BOOST_PP_SEQ_SIZE(list), \
BOOST_PP_SEQ_TRANSFORM(AKANTU_PP_TYPE_TO_STR, prefix, list))}; \
return convert.at(type); \
} \
} /* namespace std */ \
namespace akantu { \
inline auto operator<<(std::ostream &stream, const type_name &type) \
-> std::ostream & { \
stream << std::to_string(type); \
return stream; \
}
#define AKANTU_ENUM_INPUT_STREAM_(type_name, list, prefix) \
inline auto operator>>(std::istream &stream, type_name &type) \
->std::istream & { \
std::string str; \
stream >> str; /* NOLINT */ \
static std::unordered_map<std::string, type_name> convert{ \
BOOST_PP_SEQ_FOR_EACH_I( \
AKANTU_PP_ENUM, BOOST_PP_SEQ_SIZE(list), \
BOOST_PP_SEQ_TRANSFORM(AKANTU_PP_STR_TO_TYPE, prefix, list))}; \
try { \
type = convert.at(str); \
} catch (std::out_of_range &) { \
std::ostringstream values; \
std::for_each(convert.begin(), convert.end(), [&values](auto &&pair) { \
static bool first = true; \
if (not first) \
values << ", "; \
values << "\"" << pair.first << "\""; \
first = false; \
}); \
AKANTU_EXCEPTION("The value " << str << " is not a valid " \
<< BOOST_PP_STRINGIZE(type_name) << " valid values are " \
<< values.str()); \
} \
return stream; \
}
#define AKANTU_CLASS_ENUM_OUTPUT_STREAM(type_name, list) \
AKANTU_ENUM_OUTPUT_STREAM_(type_name, list, type_name::_)
#define AKANTU_ENUM_OUTPUT_STREAM(type_name, list) \
AKANTU_ENUM_OUTPUT_STREAM_(type_name, list, )
#define AKANTU_CLASS_ENUM_INPUT_STREAM(type_name, list) \
AKANTU_ENUM_INPUT_STREAM_(type_name, list, type_name::_)
#define AKANTU_ENUM_INPUT_STREAM(type_name, list) \
AKANTU_ENUM_INPUT_STREAM_(type_name, list, )
#endif /* AKANTU_AKA_ENUM_MACROS_HH_ */
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